package book;

public class BookList {

    private Book[] books = new Book[10];  //表示当前书架上书的有效个数
    private int usedSize; //当调用该方法时，书架上 预先存放3本书

    public BookList(){
        books[0] = new Book("三国演义","罗贯中",10,"小说");
        books[1] = new Book("西游记","吴承恩",15,"小说");
        books[2] = new Book("红楼梦","曹雪芹",5,"小说");
        usedSize = 3;
    }

    //获取某个下标的书
    public  Book getBook(int pos){
        if (pos<0){
            return null;
        }
        return books[pos];
    }

    public void setBook(int pos,Book book){
        books[pos] = book;
    }

    public int getUsedSize() {
        return usedSize;
    }

    public void setUsedSize(int usedSize){
        this.usedSize=usedSize;
    }
}
